<%@page contentType="text/html" pageEncoding="UTF-8"%>
<nav class="navbar navbar-expand-md navbar-dark fixed-top bg-dark">
      <a class="navbar-brand" href="#">云雷</a>
      <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarsExampleDefault" aria-controls="navbarsExampleDefault" aria-expanded="false" aria-label="Toggle navigation">
        <span class="navbar-toggler-icon"></span>
      </button>
  
      <div class="collapse navbar-collapse" id="navbarsExampleDefault">
        <ul class="navbar-nav mr-auto">
          <li class="nav-item active">
            <a class="nav-link" href="control?page=index">首页<span class="sr-only">(current)</span></a>
          </li>
          <li class="nav-item">
            <a class="nav-link" href="control?page=cart&submit=detail">购物车</a>
          </li>
          <li class="nav-item">
            <a class="nav-link" href="control?page=search&submit=again">继续选择</a>
          </li>
          <li class="nav-item">
            <a class="nav-link" href="control?page=order">订单</a>
          </li>
          <!--<li class="nav-item">
            <a class="nav-link" href="order.jsp">我的订单</a>
          </li>-->
        </ul>
        <form class="form-inline my-2 my-lg-0" method="post" action="control?page=search&submit=first">
          <input class="form-control mr-sm-2" type="text" placeholder="三体" aria-label="Search" name = "bookName">
          <button class="btn btn-outline-success my-2 my-sm-0" type="submit">搜索图书</button>
        </form>
      </div>
    </nav>